Chris pointed me to the fact, that the window geoms calculation can be done once for each monitor, so I applied this remark
d31b5ad96b0ba7b5b0a30928fcf000428339a577 0.1
0a6472e2203994bc5738d40a340d26f7ec9d6062 0.2
7e66082e5092fb0bccd18a3695a0bec52c80fdb2 0.3
eb3165734f00fe7f7da8aeebaed00e60a57caac9 0.4
22213b9a2114167ee8ba019a012e27da0422a61a 0.5
c11f86db4550cac5d0a648a3fe4d6d3b9a4fcf7e 0.6
3fb41412e2492f66476d92ce8f007a8b48fb1d2a 0.7
cd15de32e173f8ce97bfe1c9b6607937b59056b4 0.8
fae61afa861755636c4a1070694209ace8efbb6c 0.9
bbc98e77ae89a7c9232a5be0835f60ea00d8036e 1.0
44a55e6e46bf6c231780b09d919977d6f01083de 1.1
e3179ce2b90451d2807cd53b589d768412b8666b 1.2
f5f5cbf016a94b48a8fe9c47f0736e96d166d5d4 1.3
3cff9403766bf83a9fc2a0aef230115d68de2a8e 1.4
728c9089b079721b43c3347124639a29baa22a97 1.5
ad3fa2d185426c51fd5deceae809770363f8d33c 1.6
4dbdb61c8b8ce21dee5c7050a6b103855964ed20 1.7
d5ad819f2a66a40fa75dd2e44429f3bfc884d07b 1.7.1
c71952fa3c7ca848ec38a6923b5c6d0e18fff431 1.8
a5567a0d30112822db2627a04a2e7aa3b6c38148 1.9
12deea36603da407e3f32640048846a3bd74a9ec 2.0
a2c465098a3b972bbed00feda9804b6aae1e9531 2.1
7e92f58754ae6edb3225f26d754bd89c1ff458cf 2.2
719b37b37b0df829d7cf017ac70e353088fe5849 2.3
32b246925086910d63147483160281a91a47479f 2.4
dcbbfabc8ecc5f33a6cc950584de87da1a368045 2.5
c7f84f23ec5aef29988dcdc4ec22a7352ee8f58e 2.5.1
5308dd22b6ee8e3218c81d9e7e4125f235bb5778 2.6
21951c0dfbae5af68ed77821a4d87253ee91803f 2.7
107719a9ce3bd0c79f9f1f626596eb338a276561 2.8
3a5910fac3ccb522a98aeeba7af7008530b25092 2.9
76b58d21ea98257c05565a3b9c850b9b26a32968 3.0
e1c8bef05e6e48df4f26471ea0712aa43ab9d949 3.1
4ce65f61f01b055fa6c2901c6d2527ef741aa4bf 3.2
f2cabc83a18f9b5b548159329ddd4dee904fa31f 3.2.1
d3876aa792923f9a95f7ad0c7f0134533404df35 3.2.2
0f91934037b04221ff5d1ba3a6c39c1ff26e3661 3.3
9ede7b2d2450537e750d5505789fbe63960e97e6 3.4
63ad05e7f9e1f4f1881fb02f529cb6c6ae81e693 3.5
75b1b25fe0d7e29400baf30568153f668324928b 3.6
20ec6976cee1fcfee0c2f354ae382ee3f9f68efa 3.6.1
baee494346e520f8dee2cee9491b8350064770d2 3.7
2ea201354cf016407ea93e1e390d1422940d29b0 3.8
55478328b2422c700c5404a774c85e77322f41a3 3.9
018c3846842291cb6c009dc087e7fe2f0ef53bea 4.0
00f4180df72b49aadb2933804fde4bfb33e5666d 4.1
c13cb8c6b7a56af74cc88346e71d2490470b546f 4.2
e0ec0d5d8b1ef3ee04a83c7c0fee5853aa2ac6a6 4.3
408014d2126153d2b0fce26a13ba707db222b7b9 4.4
7c117df5d202530e85066d8b1ab02cef605c79ad 4.4.1
2acc60d6dfe28c101a8cd44a8aa710a38ae3607c 4.5
bcd7e18e196a00cc2e97ff3a4a58f3cdaba13856 4.6
d6d3085307d8d98b8b012b669e858fd787befeb1 4.7