Map layers that looks fine in OL2 looks blurry in OL4 with same config. With the resolutions declared for layer is is blurry, but calculated resolutions makes it clear. But the map is shifted slightly with calculated resolutions.
Map layers that looks fine in OL2 looks blurry in OL4 with same config. Here comparison with no tileGrid.
Map layers that looks fine in OL2 looks blurry in OL4 with same config.