Hello Alexey,
The project tested consists of a 48 image data set from Phantom 3 camera (12 Mpix) at 50 m height above ground. As suggested by Martin, i redid alignment on 1.7.3 but using tpt limit of 6 000 instead of original 10 000. And I got basically same amount of inicial tpts (87 000) as 1.6.6 test (with 10 000 tpt limit) and also total alignent time of 5 min 46 s vs 5 min 26 s for 1.6.6:
Tie Points
Points 32,106 of 87,545
Point colors 3 bands, uint8
Key points No
Average tie point multiplicity 3.4343
Alignment parameters
Accuracy High
Generic preselection Yes
Reference preselection Source
Key point limit 30,000
Tie point limit 6,000
Exclude stationary tie points No
Guided image matching No
Adaptive camera model fitting Yes
Matching time 1 minutes 38 seconds
Matching memory usage 580.21 MB
Alignment time 4 minutes 8 seconds
Alignment memory usage 52.78 MB
Optimization parameters
Parameters f, b1, b2, cx, cy, k1-k3, p1, p2
Adaptive camera model fitting No
Optimization time 2 seconds
Software version 1.7.3.12136
File size 7.87 MB
No GPU errors appeared during alignmemnt... see attached logs for alignment on 1.7.3 with 30 000 kpt/6 000 tpt limit and same alignment on 1.6.6 with 30 000 kpt/10 000 tpt limit
PS. If you want to test on your side, i sent the link to image set to support