Here is the cable I bought: https://www.amazon.com/gp/product/B07QQNFKZK/ref=ppx_yo_dt_b_asin_title_o08_s00?ie=UTF8&psc=1 and the USB extender: https://www.amazon.com/gp/product/B01FQ88CHS/ref=ppx_yo_dt_b_asin_title_o08_s00?ie=UTF8&psc=1
As for bugs, once everything was set up properly it works without issue. With that said, it was not easy to get everything working properly. I have an RTX 3080 and apparently the display ports have different capabilities, and it took a lot of messing around to get everything working.
My setup has 3 video outputs: 1. 3440x1440@120Hz 2. 4x@60Hz 3. Index@120Hz. In some configurations I would lose the ability to put my monitor on 120Hz, sometimes I would get no output on the index. The only way I was able to get everything to work as specced was having the 3440x1440 on the first DP port over the 60ft cable, Index on second, and TV on the HDMI. Literally every other possible porting led to some kind of weird issue. I intially tried to use a coupler to have my desktop in my office and extend the index out to another room. For whatever reason, that would only work on the extender if I unplugged one of my other outputs.
These 10 meter cables (and F/F DP adapter) work perfectly for me:
https://www.amazon.com/dp/B00V7NOST8/ref=cm_sw_r_cp_api_i_milyFbCG2DTYJ
https://www.amazon.com/dp/B00YFPM2CU/ref=cm_sw_r_cp_api_i_LjlyFb82TG4C9
https://www.amazon.com/dp/B01FQ88CHS/ref=cm_sw_r_cp_api_i_oklyFbQ7BC2HC
This setup has worked perfectly for me the last 2 years.
For 33ft/10m , just search for equivalent for the length you want.
https://www.amazon.com/gp/product/B00V7NOST8
Do you get sparkles in dark scenes as a result of the cable extensions? I bought a similar 25 foot optical cable and the 3.0 Active USB cable and most everything works fine except the sparkles and the Index camera. The camera looks distorted like it has a black fabric screen in front of the lenses. The cameras tests ok using WebCamTest. Have you had any other oddities that you attribute to extending the Index with your cables.
By the way, thanks for the post as it pointed me in the right direction for allowing my system to be in a different room from the playspace.
The optic cable I used was: https://www.amazon.com/gp/product/B07X4W61YP/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1
The USB Cable: https://www.amazon.com/gp/product/B01FQ88CHS/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1