Not sure what kind of perverted pleasure I get from reading yet another "slow drive" discussion but I guess hoping someone will provide a clear and consise response so maybe people listen.
There are many people affected from this issue. The majority always say the issue started after a while (at least I have not read once someone say it happened the first day they got a new USB drive). Since our Teslas upgrade quite regularly, people also seem to go for the "after it, therefore because of it". There are people that express opinions on this issue that read like facts even when anyone with any knowledge of the matter would laugh at the statements. But I digress as usual.
There are very few if any credible reports of SSDs/high endurance SD cards exhibiting the problem. Flash drives are cheap for a reason, the components that go in them are almost never meant to be used for constant recording/writing they are subjected by teslacam.
In the master thread I tried to argue the affects of latency introduced by a cheap flash controller dealing with cheap, marginally working NAND chips. Also tried to show how flash drives are not as durable as the number of write / erase cycles most people expect they can go through without full failure and needing ECC to intervene. I even asked if anyone with a flash drive that exhibit the problem will be willing to spend some time running a proper benchmark on the drive to see how close it is to manufacturers claims after drive was in use for a while to near max capacity. No, continuous reads and writes that last 30sec or less don't count, nor tests at QD 1 (we don't know how the camera streams are written to the drive and I don't know if CBR or VBR is used) or tests that leave the testing computer's many layers of caching active such as simple file copy.
Best of luck finding a solution that works for you.