HI! I will follow the execution plan suggestion and post back when i have a result.

@HanShi: I have let the querry to run fully on the server B, got the result after 2 min. Re-Run it again, same result: the result came after 2 min....

HI! @HanShi: i don't know exactly what you are referring to, but if it has to do with the cache, i did not cleaned the cache on the Servers. What...

HI! @jo-2 Pattyn: I have ran a EXEC sp_updatestats on server B. This did not helped.