Using logical combination in block mode has low performance

Hi,
I found a problem with hyperscan 5.2.1.
I added the HS_FLAG_QUIET and HS_FLAG_COMBINATION flag to the pcapscan.cc deamon
in the example directory, and used the block mode to scan a pcap file with 100000 packets.
When scanning, a single thread is used to search the hyperscan database,
and the following two expression configuration files are used respectively:

The first type:
There are 10000 expressions, all using the default flag.
1:/abcd1ef/q
2:/abcd1ef/
3:/abcd3ef/
4:/abcd4ef/
5:/abcd5ef/
6:/abcd6ef/
7:/abcd7ef/
8:/abcd8ef/
9:/abcd9ef/
10:/abcd10ef/
11:/abcd11ef/
12:/abcd12ef/
13:/abcd13ef/
14:/abcd14ef/
15:/abcd15ef/
... ...
10000:/abcd10000ef/

The second type:
Three subrules are provided, all of which use HS_FLAG_QUIET,
and then generate 10000 logical combinations through these three subrules，
where the character 'q' corresponds to HS_FLAG_QUIET flag,
character 'c' corresponds to HS_FLAG_COMBINATION flag.
1:/abcd1ef/q
2:/abcd2ef/q
3:/abcd3ef/q
4:/(1|2)/c
5:/(2|3)/c
6:/(2|3)/c
7:/(2|3)/c
8:/(2|3)/c
9:/(2|3)/c
10:/(2|3)/c
11:/(2|3)/c
12:/(2|3)/c
13:/(2|3)/c
14:/(2|3)/c
15:/(2|3)/c
... ...
10000:/(2|3)/c

The "abcd1ef" expression will hit, and the expression of "abcd2ef" ~ "abcd10000ef" will not hit.

After running, the performance of the first configuration is very high,
while that of the second configuration is very low. The specific results are as follows:

********************************************************* First configuration *********************************
Pattern file: ../config/ policy.conf
Compiling Hyperscan databases with 10000 patterns.
Hyperscan block mode database compiled in 0.42 seconds.
PCAP input file: ../var/top10w.pcap
100000 packets in 1 streams, totalling 3559368 bytes.
Average packet length: 35 bytes.

Block mode Hyperscan database size : 1241832 bytes.

Block mode:
Total matches: 1102
Match rate: 0.3170 matches/kilobyte
Throughput: 3521.71 megabits/sec

********************************************************* The second configuration *********************************
Pattern file: ../config/policy2.conf
Compiling Hyperscan databases with 10000 patterns.
Hyperscan block mode database compiled in 0.04 seconds.
PCAP input file: ../var/top10w.pcap
100000 packets in 1 streams, totalling 3559368 bytes.
Average packet length: 35 bytes.

Block mode Hyperscan database size : 804904 bytes.

Block mode:

Total matches: 1102
Match rate: 0.3170 matches/kilobyte
Throughput: 0.82 megabits/sec
Summary:
The scan performance of the first configuration is 3521.71 megabits / sec;
the second configuration is 0.82 megabits / sec, with a performance difference of more than 4000 times.

Question:
Why is performance so low when using logical composition?