Because there was nothing todo for it. At some point in time you have fixed most performance issues, bugs and other things. The cards simply work as intended. Your not going to keep a dozen of programmers on a expensive payroll just to update the polaris or vega drivers. You focus on the new released cards, RDNA1, 2 and now 3.
AMD was doing nothing for Polaris in years anyway
Because there was nothing todo for it. At some point in time you have fixed most performance issues, bugs and other things. The cards simply work as intended. Your not going to keep a dozen of programmers on a expensive payroll just to update the polaris or vega drivers. You focus on the new released cards, RDNA1, 2 and now 3.
They could bring features like RSR or FMF to Polaris and Vega.
You can get RSR on Polaris and Vega by using Magpie. It’s a little quirky to use at first, but it works.