diff --git a/misc-scripts/id_mapping/default.conf b/misc-scripts/id_mapping/default.conf
index 38cbded1f5fea84b91b31aa5947ee542153d5676..984a359ce293ab54ec670016234711e16be52e15 100644
--- a/misc-scripts/id_mapping/default.conf
+++ b/misc-scripts/id_mapping/default.conf
@@ -47,8 +47,8 @@ build_cache_concurrent_jobs = 25
 
 ;; LSF parameters
 lsf_opt_run_small           = "-q small"
-lsf_opt_run                 = "-We 90 -M15000000 -R'select[linux && lustre && mem>15000],rusage[mem=15000]'"
-lsf_opt_dump_cache          = "-We 5 -M5000000 -R'select[linux && lustre && mem>5000],rusage[mem=5000]'"
+lsf_opt_run                 = "-We 90 -M6000000 -R'select[linux && lustre && mem>6000],rusage[mem=6000]'"
+lsf_opt_dump_cache          = "-We 5 -M2000000 -R'select[linux && lustre && mem>2000],rusage[mem=2000]'"
 
 transcript_score_threshold  = 0.25
 gene_score_threshold        = 0.125
@@ -60,10 +60,10 @@ exonerate_bytes_per_job     = 250000
 exonerate_concurrent_jobs   = 200
 exonerate_threshold         = 0.5
 exonerate_extra_params      = '--bestn 100'
-lsf_opt_exonerate           = "-We 10 -M1200000 -R'select[linux && lustre && mem>1200],rusage[mem=1200]'"
+lsf_opt_exonerate           = "-We 10 -M600000 -R'select[linux && lustre && mem>600],rusage[mem=600]'"
 
 synteny_rescore_jobs        = 20
-lsf_opt_synteny_rescore     = "-We 10 -M10000000 -R'select[linux && lustre && mem>10000],rusage[mem=10000]'"
+lsf_opt_synteny_rescore     = "-We 10 -M5000000 -R'select[linux && lustre && mem>5000],rusage[mem=5000]'"
 
 ;; StableIdMapper
 mapping_types               = gene,transcript,translation,exon