arduino IDE a freezes how solving this ?

I didn’t change anything in the system, (at least it seems to me that way), but my IDE freezes for several seconds on different options, for example, when choosing a sketch or loading or saving a file or when pressing a key combination for compilation(Ctrl+R), etc.
How do I find a reason?

(I added GIF animation It visible? Шав not then click link:arduino IDE a freezes 2020-06-25~17_38_18.gif )

There are multiple probable causes.

Turn of any additional security / antivirus (only for testing) If it helps add the Arduino install locations to the security's exclusions / whitelist.

Using cloud based / network install locations for the IDE.
Uninstall and re-install to a local drive only.

Network issues such as corporate / educational / free wifi use.
talk to the IT people to get proper access or turn OFF in the IDE the check for updates option.

Thanks, these options do not suit me.

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