Hey, I know this is old but I wanted to say I've been having very similar issues (especially 1. Slowmotion). Hope this gets resolved soon too!

[version 3.1.3.3]

Win10 pro 64-bit (version 10.0.19043 Build 19043)

3 displays, two sides are 1920x1080 and middle (main) is 2560x1440

Not sure if relevant but I recently installed Wallpaper Engine, but this was also happening before then.

For me it's not work (even if works I not feel the difference).  I even tuned off some other additional checkboxes parameters too Unfortunately It's lagging the same way

P.S: I have checked it even on v 4, and it's still the same all except last one (5 - "UNPROCESSING TEXT"). Looks like this one was fixed. Unfortunately, I launch v4 and have no see the reason to upgrade. Probably will need to wait on version 7 or something like that... . I really hope on that, that once it will be fixed.  

Because mostly really interfering of nice expirience to use it, is still 3) "MAGICAL GRAB-HAND" and 1) "SLOWMOTION". First one is do a lot of randome mess up. So all the time you should be really careful/scary to do any manipulations with files/folders and icons on the descktop screen, with extracontol. And it's slower the work(with conjuction of "slowmotion bug") and need to used to strange behave on reflecs level (agree, sounds weird?). Or use only 1 screen (but I bought it exactly for purpose of using in few screens mode, because this is one of the main feature of it, that I really like in Fences, to be able have order with a lot files/icons/folders, for different workflow). And second one bug just slow process of working with files and icons.

You really should check your links before posting.   

You know.. maybe because I did purdge(more chance that's why) or because of explorer restart

• It feels now that it start behave just slightly better then it was in v3, But, only for operation like grabing somehing(icon/file) it now show icons nearby cursor more or less faster then before (like on 20%-30%). For all others actions (like when you move icon from one place to another) it will same long "thingking" ~1...1,5 seconds. Here is example (and this is even without animation). Example  With animation it twice longer(because need to wait on icons moves). Example

• Also I just found some nice visual changes in v.4 (looks more appealing.. or maybe I have  not paid attention to it before)  and that unfolding fences start work more smoother and responsive then before (this is I really appreciate). But its' only for tunels folders (for manual fences - it's same as was in past) and only for down direction (Upside, when unfolding above  it flickering) 

• About SLOWMOTION bug. I found that a lot of lagging more dramatic at first time usage for any kind of action (like if I hide all Fences, or first time switch screens, or unfolding something) First time it will be even +20% worst/slower then repeat it any times leter. Maybe it will be usefull somehow.

• Also i found that when you hover over any another Fence, due process of closing/unfolding any of exist. It will close it slightly slower close/unfold (~2-7%). Not sure that on recordint it will be seen.

I don't found the proper branch as it was before, so until not forger I will put it here. WISHLIST: 

1) DECREASE DELAY BETWEEN CHANGING DESCTOP SCREENS
Currently it have some half of the second of freezing/thinking before start swap to another screen. Or maybe it feels so, because when you need to switch on 4rth screen you should press button few times, and it's not responce for each one, but have some pauses in 1 second between screens stop animation. And it's not depends off animation on/off for swaping screens. For both modes they did this pause so you can't just fast jump onto 4th screen without this pausing.

2) DO UNISTALL PROCESS MORE SIMPLE. (same to upgrade)

Currently it extrimely stressful process. Duno.. maybe it's because it happens on my PC.. but I run unistall "Fences 4" and it run window, then after continue press button it hide window but still in the task bar..due 10 min without any responce and ability to close it. Only from "close the process". And I repeat it fome few times.. because it not do anything looks like, because all files was on place. Only once it decided to delete files.

(Please. Do not hide it, because it's not obvious what is happening. And put the progress bar of deleting process, to not think that it stuck.)

And after all that you should then 'dancing' with purging and all this process. WHy to not include it insude unsistall by default? As I remeber before it was not simple too.. because I always run Purdge.bat file

Just imagine situation when you do all this "dancing" at time when you was not prepeared for it, and should continue do work but all yours work was attached now to different folders and you cant understand in this mess where something located now. And should continued trying to fix this problem, just to be able come back to previous activity.  I think it will be most common situation for users.

3 SHOW PROPER FANCE ICONS ON STARTING OPERATIONS SYSTEM AT ONCE

Another thing that I wish to appeare in future versions - is that after you launching OS, it currently  show you all yours desktop icons as total messy, untill it's not launch program. Usually it about 1 minute. But if they  at once start all like it should looks like on desktop, it would be much more appealing. Dunno if it possible to achiave somehow. But it will be great.

Just example from my own experience. I have folder for anatomy references, so I usually grab and put there anything that catch my eye for futher study process.. so and now some one came as guest to you and you start OS, and all this mess of images randomely spread at Desktop. Can't tell that it too much bother me, but I found this unnnecessery that someone will be able see all your files at once.  

4 UPDATE BUTTON NOT WORK PROPERLY

I push "check for updates" button stable each week after 3.1.3.3 and never get any news that v4 came. It always show me that current is the last version (even before downloadn new one, I have checked this button again, and it's now show me any info about new update), I just accidentaly found that update was realesed mouth ago, when came on site. 

5 GLOBAL HOTKEYS FOR SCREEN SWITHCH 

Would be really love to see Global hotkeys to switch the screens without no need to press each time on descktop, just to activate ability to swithc with hotkeys. This moment slower down fast usege in work. Becuase usually  I do like this:

1. press hotkeys... understood/remember that it not works
2. take my mouse/stilus and do press with it
3. put it back
4. move hands to keyboard and press hotkeys again, and only now I have screen that I need.

If ound it quite too many useles actions (at least 3 steps) to do simple action.

6 DISCOUNT IN HALF PRICE FOR THOSE WHOM IS BOUGHT ONCE

Of course maybe I'm too poor... but I found current discount for upgrades too low. It's too close to the same price. Because I can imagine how many time you will need to fix all the exist problem it seems to some few years(and it's normal for biulding software, questin not in this)
And just thinking sensibly, I don't see any point in buying the program every year, especially since I've already bought it once. Okay, I understand that it needs for support to bugs  fixing process and etc. But 2$ discount it's like the same price Since, in general, the current payment model discourages all the desire to maintain on an ongoing basis, when you need to buy a program for a new one every time. It's more reasonable to wait until it will be workable, and only then buy it again,  than pay each time with each new version. Why not make a discount of at least half of the original price (as 5$) for those who have already bought it once? Then at least it is more or less acceptable. And I feel that it will be more comfortable more mostly users, to buy it each time.  And the person is more likely to agree. And in yours current model, it seems to me that any sane person will simply decide to wait a year or two, unntil it will be workable(then watch test trial version to see changes). Than support all this time from version to version. It seems to me that with the current model you scares away even those who could theoretically be able to support the project. And boutht middle versions too

7 REVERT BACK FALLEN OUT  FROME THE SCREEN FENCES

I don't know, maybe it work like this, but if no — all Fences that was for some reason fall out from Desktop screen, should be placed back on the screen after Restarting OS

9 OVERLOAD SSD WITH OS AND FREEZING SYSTEM [the last one and fatal/ctitical for decision to use Fences at all]

I really have no idea what might be a reason of this, but after I reinstalled back from version 4 to to 3.1.3.3  (after trial period was done and I rewatch on differences) it start freeze OS just almoust each day by overloading SSD where it was installed to 100%. So it's impossible to do something except hard reset, because each action might delay of 10-30 min

I can have only 2 assumptions (maybe some windows update happence[and it defenetely was] that or after v4 installation process somethig somewhere was dramatiaclly changed.. but. As far as I remeber it was happence before too..(with all versions) but really rarely. Maybe once in a week or two. So I not paied attention to it a lot, and start thingking that SSD probably gonna die. But now it's happence almoust each day, that not give me any possibilities as trying to find the reason during few weeks. 

It's not something else. It's definitely because of Fences somehow interat with SSD. SSD is fine as I checked (it's only 2 years old, it always have ~30 GB free space from 240), all possible or impossible thing that might lead to it I checked and cleaned too. And each time I've installed Fences system freeze happence in randome moment of time. But mostly when I do some interatiocns with windows or explorer (and mostly(80% cases) of this time as I remeber Firefox was opened)  Only when I remove Fences  - nothing like that is happence no more. And OS goes smoothely well without any freezing at all. So please check this moment in future updated.. something definitely happence there. 

So.. how I'm not like it's possibilities of quick access and few screens with  preview of images inside portals... I should remove it   just to be able do something at all, because I don't see any other way. Sadly. Especially when I have used to it so. Now my only hope to wait on really far future updates(after year or two), to check it then. And maybe at once some previous mantioned(freezing or "grabbing hang") bugs will gone too. At least one good thing will happen for you, that I'll not bother you more near future with my bad expirience here😅

PS: I always did purging. And tested v3 witout my usual settings too (clean settings) - and always have same result: freezing OS.

Anyway, whishes good luck with development. Hope once it will be more stable 🤞