How to Optimize Wi-Fi Performance in a Busy Office Environment?

Hey guys! :blush:
I Need some advice on optimizing Wi-Fi performance in a busy office environment. We have around 50 employees, and we are experiencing intermittent connectivity issues, slow speeds, and occasional drops.

Current Setup:

Multiple access points (APs) throughout the office
Dual-band Wi-Fi (2.4 GHz and 5 GHz)
Mix of laptops, desktops, and mobile devices

Problems:

Interference from nearby networks
Overlapping channels causing congestion
Inconsistent signal strength in different areas

Steps Taken So Far:

Used a Wi-Fi analyzer to scan the network
Adjusted AP placements and channels
Upgraded firmware on APs and devices

I also check this: https://community.metageek.com/t/how-wi-fi-almost-didnt-happenwiredqlikview But I have not found this. Could anyone guide me about this? Despite these efforts, the issues persist. Could anyone provide insights or advanced tips on how to further improve our Wi-Fi setup? Are there specific tools or best practices that we might have overlooked?

Thanks in advance! :blush:

Respected community member :saluting_face: