Avast created weird issues to my laptop in the latest version

[Evjls]

I was using the latest version of avast premier 17.4.2294 on windows 10 home creators update
Only File shield, web shield, behavioral shield, firewall and Real Site were enabled
I was using comodo firewall and zemana antilogger for months without problems. Then, I switched to avast because I liked it. I was using 17.4.2294 a few weeks ago without problems but in the recent updates, there were some problems

- Wondershare filmora took 5 minutes to open, 0% CPU and disk usage. Tried many times, reboots, no improvement
- Couldn't install kaspersky antiransomware

What I did later:
- Disabled all shields including behavioral shield -> didn't fix
- added exclusion of filmora folder -> didn't fix
- checked "Use nested virtualization where available" -> didn't fix
- repaired avast using control panel -> didn't fix
- Uninstalled and reinstalled using the offline exe -> didn't fix
- Clean installed -> didn't fix

What worked:
- uninstalled avast without a reboot via IObit Uninstaller -> filmora took only 5 seconds to open, immediate improvement :\
- after a reboot, kaspersky antiransomware was installed successfully without any problem

conclusion: avast was definitely the culprit of all problems. Many people have reported the same issues (Overwatch, for example). Please fix it and improve the compatibility

I was using the previous version without problems but this recent version has had many problems

[Eddy]

Did you use avastclear ?
Switched from avast to what ?

Never ever use anything from IOBit. (they are thieves and lier)
Comodo needs to go

[Evjls]

Did you use avastclear ?
Switched from avast to what ?

Never ever use anything from IOBit. (they are thieves and lier)
Comodo needs to go

I used avastclear. Before installing avast, I uninstalled everything else
I used iobit uninstaller only. I could also use geek uninstaller to uninstall avast.

Now I temporarily use secureaplus and kaspersky antiransomware
I may comeback to avast after a week to see if there is any change
but with my current setup, I can see a significant boost in my laptop performance. Avast 2017 has been too heavy compared to version 12. Most noticeably the boot time

[mchain]

Unless one boots a system many times a day, anything less than three minutes is good.  Boot once and be done.

[Evjls]

Unless one boots a system many times a day, anything less than three minutes is good.  Boot once and be done.

what do you mean? I don't understand your comment. reboots didn't solve the problem. I tried at least 2 consecutive reboots but it still didn't work. Stopping all shields didn't work. Uninstalling avast without a reboot worked immediately. Therefore, there is something related to avast that made a few programs malfunction

[DavidR]

He, 'mchain' isn't saying it resolves it, just that if you 'only' boot once a day or as many do leave their system on 24/7 then you avoid this pain.

It most certainly isn't a resolution.