Reporting in again. I haven't heard a single creak since lubricating the headphones. Very satisfied with the sound coming from these cans.
I've had a handful of software issues however, even on the latest software. When connecting the headphones to my Android phone, tracks with a lot of bass crackle a lot. The only way to fix this is to disable bluetooth on the phone and re-enable it, letting the headphones reconnect on their own. My WF1000-XM4 earbuds don't suffer from that problem at all, which leads me to believe this is a software issue.
I've had a similar problem occasionally when connecting the 2.5mm plug into the headphones when they're turned in and connected to a device. The sound coming from the headphones will be nothing but noise. Turning the headphones off and then on again fixes the problem.
Both this pair and the pair I sent back with the excessive creaking have had this issue. Is this something I should follow up on with Sennheiser
@ericpalonen ?
PS5 audio was very poorly thought of. I get the impression Sony wanted users to either use the 3.5mm connector on the controller which sort of sounds awful, or get a pair of wireless gaming headphones that connect to the console through a USB dongle.
3D audio doesn't even work if you connect your headphones to a system connected to the PS5 instead of the PS5 itself. I just stopped bothering with that nonsense and connect my headphones directly into my LG C1.