High Performance Screen sharing Mode Works Only One-way

[macguyincali]

High performance screen sharing (HPSS) works great when it works. I have a MacStudio M1 and MacBook Pro M3. I am able to connect using HPSS when going from the MacStudio to the MBP, but when I attempt the reverse (MBP to Studio) I get a gray screen. The MBP is in the same room as my Velop node / router connected via Wifi (TX rate varies from about 500 to 900Mbps when I option click the wifi menu dropdown). The studio is connected via GB Ethernet to the Velop node. Interestingly, when I'm in the garage (which has its own Velop node), I AM occasionally able to do high performance screen sharing from MBP to Studio. The Studio, incidentally, has two screens, but in high performance mode, it gives me an option of creating a single screen desktop which is the option I always use. In non-performance mode (regular) it displays both screens by default. Anyone have this problem and/or suggestions? Thanks!