I have been dealing with rtsp connections consistently dropping from iSpy for 6 wyze cams for a year or better. It got me darn crazy.
Today I moved all my Tasmota/IoT/MQTT devices to a separate wireless router/access point (different wifi SSID too). I have not seen one camera disconnect since.
Btw… Used an old Linksys wrt54g with dd-wrt I had laying around. Yard sales & Thrift stores have them for $3 - $5.