For the system crashing issue, do you happen to have the different monitors connected via different connector/protocol types, like one HDMI and one DP? I had a

For the system crashing issue, do you happen to have the different monitors connected via different connector/protocol types, like one HDMI and one DP? I had a similar issue with my previous GPU, an RX560, where my system would sometimes freeze either while turning the monitors on or other times when it was locked with both monitors off. On the 560 I had no choice but to connect 1x DP + 1x HDMI but on my newer 6700xt I connected both monitors via DP and the whole class of issues just went away.