Rstudio respond super slow nearly freeze in Windows

Everything work perfectly until one night. Rstudio act like it got stuck with something in a sudden. It respond with the command, but in very weird way. It took very long time to boost and also the react with simple command like open the file. I might need 20 mins to start the project and 40 secs to just open simple R script file. I have reinstalled and try to looked up for the program that may cause this, like this thread [RStudio Desktop Freezes on Open (Windows 10)] . But nothing solve the problem... any suggestions are always welcomed.

My setup:
Windows 7
Rstudio 1.2.5033
R 3.6.0

sessionInfo via Rgui:
R version 3.6.0 (2019-04-26)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 7 x64 (build 7601) Service Pack 1

Matrix products: default

[1] LC_COLLATE=Chinese (Simplified)_People's Republic of China.936
[2] LC_CTYPE=Chinese (Simplified)_People's Republic of China.936
[3] LC_MONETARY=Chinese (Simplified)_People's Republic of China.936
[5] LC_TIME=Chinese (Simplified)_People's Republic of China.936

attached base packages:
[1] stats graphics grDevices utils datasets methods base

loaded via a namespace (and not attached):
[1] compiler_3.6.0

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