Rstudio crashing

Windows 8 machine, 16G Ram
R version 3.5.1 (2018-07-02)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows >= 8 x64 (build 9200)

Matrix products: default

[1] LC_COLLATE=English_United States.1252
[2] LC_CTYPE=English_United States.1252
[3] LC_MONETARY=English_United States.1252
[5] LC_TIME=English_United States.1252

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

loaded via a namespace (and not attached):
[1] compiler_3.5.1 tools_3.5.1 yaml_2.2.0

Seems like this happens after saving image, its about 175MB, im running 16G on my machine. Once image is saved, then next time i do anything else it crashes.
What would be the best way to troubleshoot? I have removed both R and Rstudio from the machine in order to try and remedy the problem.