Postgresql same query is slower on new hardware

I migrate my data to a new server hardware that after my benchmark looks faster in terms of CPU and disk i/o. Unfortunatly my query seems slower on that new hardware with the same data and the same query. Here is my query : EXPLAIN ANALYZE SELECT AVG(CAST(completeness->>'fr' AS INTEGER)) as average FROM product INNER JOIN channel ON channel.id = product.channel_id WHERE channel_id = 'myUuid'; On old server my times are : Planning Time: 0.281 ms Execution Time: 50.683 ms On the new server my times are: Planning Time: 0.162 ms Execution Time: 115.268 ms That is significally slower, I already tried making a VACUUM FULL and REINDEX mydatabase And also increasing the default_statistics_target but any of this changed anything. Of course I'm using the same postgresql version (12.14) and everything I could found in similar questions, do you have any other solutions ? EDIT : For some more details : Old and faster :

Aggregate  (cost=58441.85..58441.86 rows=1 width=32) (actual time=66.284..66.285 rows=1 loops=1)
   Buffers: shared hit=1132 read=18379 written=16
   I/O Timings: read=36.167 write=0.101
   ->  Nested Loop  (cost=594.96..58185.68 rows=25617 width=25) (actual time=5.003..61.783 rows=25985 loops=1)
         Buffers: shared hit=1132 read=18379 written=16
         I/O Timings: read=36.167 write=0.101
         ->  Seq Scan on channel  (cost=0.00..1.30 rows=1 width=16) (actual time=0.028..0.031 rows=1 loops=1)
               Filter: (id = 'myuuid'::uuid)
               Rows Removed by Filter: 23
               Buffers: shared hit=1
         ->  Bitmap Heap Scan on product  (cost=594.96..57928.21 rows=25617 width=41) (actual time=4.969..59.276 rows=25985 loops=1)
               Recheck Cond: (channel_id = 'myuuid'::uuid)
               Heap Blocks: exact=19408
               Buffers: shared hit=1131 read=18379 written=16
               I/O Timings: read=36.167 write=0.101
               ->  Bitmap Index Scan on idx_8ac439d272f5a1aa  (cost=0.00..588.55 rows=25617 width=0) (actual time=3.177..3.177 rows=25985 loops=1)
                     Index Cond: (channel_id = 'myuuid'::uuid)
                     Buffers: shared read=102
                     I/O Timings: read=0.389
 Planning Time: 1.945 ms
 Execution Time: 66.585 ms
(21 rows)

New and slower :

Aggregate  (cost=59666.14..59666.15 rows=1 width=32) (actual time=146.506..146.508 rows=1 loops=1)
   Buffers: shared hit=108 read=19371 written=172
   I/O Timings: read=85.949 write=1.528
   ->  Nested Loop  (cost=617.08..59402.07 rows=26407 width=25) (actual time=7.752..139.180 rows=25985 loops=1)
         Buffers: shared hit=108 read=19371 written=172
         I/O Timings: read=85.949 write=1.528
         ->  Seq Scan on channel  (cost=0.00..1.30 rows=1 width=16) (actual time=0.012..0.016 rows=1 loops=1)
               Filter: (id = 'myuuid'::uuid)
               Rows Removed by Filter: 23
               Buffers: shared hit=1
         ->  Bitmap Heap Scan on product  (cost=617.08..59136.70 rows=26407 width=41) (actual time=7.737..134.826 rows=25985 loops=1)
               Recheck Cond: (channel_id = 'myuuid'::uuid)
               Heap Blocks: exact=19374
               Buffers: shared hit=107 read=19371 written=172
               I/O Timings: read=85.949 write=1.528
               ->  Bitmap Index Scan on idx_8ac439d272f5a1aa  (cost=0.00..610.48 rows=26407 width=0) (actual time=5.073..5.073 rows=25987 loops=1)
                     Index Cond: (channel_id = 'myuuid'::uuid)
                     Buffers: shared read=102
                     I/O Timings: read=0.688
 Planning Time: 0.773 ms
 Execution Time: 146.750 ms
(21 rows)