Windows freezes up for 20-120 seconds when you close Roamit after several hours of using

[Kenya-West]

When you open Roamit, sometimes send files, then sometimes minimize window or just do not focus on the app, Roamit goes to "suspended" state, which is a part of modern Windows Application Life Cycle on WinRT.

After several hours, when you close the app, Windows 10 (1909) just freezes. You can drag cursor, but it does no action for click. You observe the freezed opearting system until it un-freezes. It can last at least 20 seconds, but in my case it can be 2 minutes.

Probably this is related to Unigram issue: UnigramDev/Unigram#1272 with developer describing why it happens, below. Because Roamit and Unigram produce the same behaviour, I can suggest you to look there to find more info.

It happens on these machines:

PC:
• CPU: Intel Core i5-3570K 4.5 GHz;
• RAM: 32 GB DDR3 (HyperX BEAST 2133 MHz);
• GPU: ASUS Strix R9 390X 8 GB 512bit;
• SSD: SATA 256 GB (Transcend);
• HDD: 5TB+;
• Power: 750W

Laptop:
• CPU: Intel Core i7-8750H 4.1 GHz;
• RAM: 32 GB DDR4 (3000 MHz);
• GPU: RTX 2060 6 GB;
• SSD: NVMe 500 GB (Western Digital);
• HDD: 2TB