I have a lot of problems in premier pro 2021 version doesn't

[Mahmoud5EA3]

motion scale doesn't worrk good something wrong it doesn't take the scale keyframe correct as i set 

also reverse speed not working at all 

thank you for kindly reply, please found out what's going on, 2020 version was much better

[MyerPj]

I'm not seeing any problems with those. You might need to clear your cache or reset your preferences. Try the cache first...

• Start PP from it's normal desktop icon (IE: don't open from a project file link).
• Close the Open/Home screen (and you will be in PP without a project open).
• Go into Edit/Preferences/Media Cache (Mac users adjust menu name)
• Then Press: Remove Media Cache Files: and Delete...
• Select: Delete all media cache files from the system and OK
• Close PP - It will create any needed cache files on the fly as you edit.

[R Neil Haugen]

In the last week, I've done a lot of scaling including keyframed animation of both clips and graphics elements. And a lot of reverse speed at everything from 50% to 1200% speed.

Not one issue. So ... what's your hardware, media, and any other effects in use?

Neil