No problems so far with FF 45.0 & 2.9.06
Care to give an example?
Pages just don't load or does FF crash?
I've had a similar issue with the latest firefox for android. Pages won't load the first time, and sometimes take more than one reload to get them to appear. I started using icecat which is based on esr. If it isn't fixed by the next version, I'll troubleshoot, and submit a proper bug report.
They aren't exactly the same, but they share some parts between pc/android. Perhaps it's the same? Try using a new clean profile, and see if it improves.