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After updating QGIS i found that wmts layers are being rendered in way that makes them useless. It look's like tiles are downloaded in greater resolution and then scaled down what makes them rough and all captions unreadable.

I'm on windows 10.

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  • Did you enable resampling in the raster options? What is the layer CRS and what is the map CRS? – Matthias Kuhn Aug 25 '17 at 8:03
  • Where would i do that? Is this a application setting or the layer itself? – MichałKraków Aug 25 '17 at 8:08
  • layer settings and project settings. – Matthias Kuhn Aug 25 '17 at 8:16
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Ok some more digging with other keywords gave me the solution:

QGIS 2.4: Basemap.at is displayed in poor quality

It's related to the scale of layer in viewport. There's a plugin called "Tile map scale" which helps put map in to scale that provides best quality. You can also change qgis scales in map setting to values that ensure proper rendering.

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    ... and make sure to use EPSG:3875 as project CRS. Reprojecting the tiles will surely loose quality. – AndreJ Aug 25 '17 at 8:51

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