Hi,
For "lower the resolution", please test to lower on both MSTSC and the remote system.
Also please test to change Colors in Display tab (MSTSC) to 16 bit if it is 32 bit by default.
We cannot install an old Microsoft RDP to replace the existing one. Third party application may help in this situation but please noticed that you may also need to install a server side app in using a third party remote desktop application.
In the meantime you can test if Remote Desktop Connection Manager works the same as MSTSC:
https://www.microsoft.com/en-us/download/details.aspx?id=44989
If it works fine you can use it for a while until getting a new display card driver for further testing.