I have disabled my virus scanner (Windows Defender only) and the issues have not changed.

I'm currently experiencing a large number of issues trying to install games through the itch.io app while working through the Palestine and Ukraine bundles I purchased a while back.

Sometimes when attempting to install games, the app works as expected - it loads the install size of the file, it automatically selects a location, and it lets me install the game. I was able to queue multiple games/downloads at a time the first day I was using the app.

However, after a game or two, or sometimes even when opening the app for the first time, the performance is VERY slow.

I frequently get "JSON-RPC connection timed out". The app hangs when trying to click on install e.g. forever waiting on "computing space requirements". The app will not load additional rows of games (either no response or the same JSON error). And most importantly, 1 CPU core on an i5-10400F is pegged near 100% usage even when the app appears to be doing nothing (~13% total usage).  I have no idea what the app is trying to do and why it's maxing out a core to look like it's inactive.

For comparison, if I open firefox, I have 42 tabs of various itch.io pages open with ~5% usage of a single core, and I can download games directly from the downloads pages without issue.

One example error is below, but it doesn't really capture all of the issues:

I haven't found a solution. I haven't opened up the app in a while, but when I do I'll probably just play through my games top-to-bottom and uninstall each of them when I'm done.

I also have this same issue.  Closing out the app and reloading it works briefly but the timeouts quickly start occurring again.  It appears to be related to loading new entries in the Library view, which is necessary in order to scroll down to the games I haven't installed yet.

A "Not Installed" filter would be great to work around this, even if the core issue wasn't fixed.