Wi-Fi issues since 17.5.1

We have a few iOS devices in the house. Also a few PCs, streaming devices, etc. Ever since updating to 17.5.1, all of our iOS devices are experiencing terrible WiFi performance. Extremely slow, frequent disconnects. We’ve tried all troubleshooting steps related to networking issues. All non-iOS devices are working fine and turning off WiFi on them is the only thing that helps. Please fix this widespread problem!