Integration tests are very slow

Each test takes ~15 seconds. That seems to me very slow. Is this just GitHub or is it that slow also on a local machine?

test-server-1      | PASS ./01_basicCrud.test.js (35.663 s)
test-server-1      |   Html client
test-server-1      |     ✓ Should perform basic CRUD (18736 ms)
test-server-1      |     ✓ Should perform basic master detail interaction (15274 ms)
test-server-1      | 
test-server-1      | PASS ./02_filter.test.js (94.238 s)
test-server-1      |   Html client
test-server-1      |     ✓ Should perform basic text filter tests (16019 ms)
test-server-1      |     ✓ Should perform basic number filter tests (15925 ms)
test-server-1      |     ✓ Should perform basic bool filter tests (11832 ms)
test-server-1      |     ✓ Should perform basic date filter tests1 (18267 ms)
test-server-1      |     ✓ Should perform basic combo input filter tests (13984 ms)
test-server-1      |     ✓ Should perform basic tag input filter tests (12415 ms)
test-server-1      | 
test-server-1      | PASS ./03_filterLazyLoaded.test.js (103.648 s)
test-server-1      |   Html client
test-server-1      |     ✓ Should perform basic text filter tests lazy loaded (17365 ms)
test-server-1      |     ✓ Should perform basic number filter tests lazy loaded (17414 ms)
test-server-1      |     ✓ Should perform basic bool filter tests lazy loaded (11769 ms)
test-server-1      |     ✓ Should perform basic date filter tests lazy loaded (25940 ms)
test-server-1      |     ✓ Should perform basic combo input filter lazy loaded (14857 ms)
test-server-1      |     ✓ Should perform basic tag input filter tests lazy loaded (13222 ms)

This is how long it takes on my machine.

 PASS  ./01_basicCrud.test.js (33.778 s)
  Html client
    √ Should perform basic CRUD (17352 ms)
    √ Should perform basic master detail interaction (15498 ms)

 PASS  ./02_filter.test.js (87.195 s)
  Html client
    √ Should perform basic text filter tests (15837 ms)
    √ Should perform basic number filter tests (15765 ms)
    √ Should perform basic bool filter tests (11030 ms)
    √ Should perform basic date filter tests1 (18002 ms)
    √ Should perform basic combo input filter tests (14058 ms)
    √ Should perform basic tag input filter tests (12114 ms)

 PASS  ./03_filterLazyLoaded.test.js (138.33 s)
  Html client
    √ Should perform basic text filter tests lazy loaded (27492 ms)                                                                                                                                                                                                                                                     
    √ Should perform basic number filter tests lazy loaded (28112 ms)                                                                                                                                                                                                                                                   
    √ Should perform basic bool filter tests lazy loaded (12993 ms)                                                                                                                                                                                                                                                     
    √ Should perform basic date filter tests lazy loaded (31224 ms)                                                                                                                                                                                                                                                     
    √ Should perform basic combo input filter lazy loaded (20120 ms)                                                                                                                                                                                                                                                    
    √ Should perform basic tag input filter tests lazy loaded (18008 ms)    
	

So this one Should perform basic date filter tests lazy loaded takes the longest. But I’d say a lot is happening there. How long do you think it should take?